I wondered the same thing. Is it not okay to talk about Hitler at all as a German? Or not okay for non-Germans to talk about him? As an American, there are lots of ugly things we don't really know how to deal with (slavery, for example) but it does seem like it's fair game to poke fun at slave masters, for example, and doesn't offend me if someone does so. Then again, maybe it's best I just stay out of this. Although I do agree that the video is not at all funny.